The organ was built in 1933 by Compton. Like most Compton instruments, the organ is fully enclosed and built on the 'extension' principal which in the case of this instrument, uses 4 'ranks' of pipes: Diapason, Hohl Flute, Salicional and Tromba.

The specification reads:

JOB NUMBER: A229

PEDAL
Subbass 16'
Flute 8'
Trombone 16'
Great to Pedal
Swell to Pedal

GREAT
Contra Salicional 16'
Diapason 8'
Hohl Flute 8'
Salicional 8'
Octave 4'
Twelfth 2.2/3'
Fifteenth 2'
Swell to Great

SWELL
Hohl Flute 8'
Salicional 8'
Flute 4'
Salicet 4'
Echo Cymbale III
Trombone 16'
Tromba Minor 8'
Clarion 4'
Tremulant

ACCESSORIES
3 double touch thumb pistons to great and pedal
3 double touch thumb pistons to swell and pedal
2 pedal coupler canceller thumb pistons
1 general cancel thumb piston
1 balanced expression pedal with indicator - organ
1 balanced expression pedal with indicator - crescendo
Double touch canceller to each division
3 ventil switches